Musiland Monitor 01 USD 24/192 USB to SPDIF - Page 37

In my experience, using SecretRabbitCode at "Best Sinc Interpolator" for 96kHz or 192kHz conversion always causes problems (I use a 3GHz Prescott CPU).

Try a different SRC, maybe PPHS and see if problems are reduced. On the other hand, if your Buffalo (very high quality) DAC can't play 44kHz music with good sound then I would be surprised. SRC is not always a good thing.

Can this baby also do AC3 & DTS multichannel?

I am looking for one that does this for a friend. He wants the closest to audiophile quality that also can work with Media Center (and variants) for movies, USB type. The only good choice I currently see is the M-Audio Transit USB.

For myself (audio only), the Musiland USD is intriguing, the M2tech HiFace is most appealing. The basic HRT Streamer could also be in the run if I decide not to pursue 24/192...but it really would need to be superior in sound (at this price point, of course).

Your input will be appreciated.

Interesting, faudrei, I sent Musiland a link to a Xilinx paper which showed how to improve cycle to cycle jitter which you might be interested in as you come from a software background http://japan.xilinx.com/products/boa..._generator.pdf
PM me if you want to discuss it further as I know it is off-topic & don't want to pollute the thread

Interesting comments made by John Swenson about the musiland here:

Digital Drive: Some thoughts on async etc. by John Swenson

John does an excellent job of explaining the musiland methodology and its deficiencies, viz. the drivers will need to be supported and its clocks could be much better!

I found this interesting:
Wonder if Musiland can comment on this. Or maybe address this issue in the next revision of 01 USD and its variants.

Yep, JS is correct, they should have used two low jitter clocks to generate the audio clocks. As far as I can tell their business strategy is to release a product later at a higher price that is further up on the audio ladder - I've gleaned this by reading their forum replies translated by Google. They consider the existing product range just for mass market appeal.

So the question is - how bad is the frequency synthesiser used? Normally, these add a lot of jitter to the clock. In this case, it seems not to be so bad because it's using the Xilinx DCM (digital clock management) in the FPGA. JS did a good analysis of this also here: DiyHiFi graph of Musiland Vs AP SYS2722

His conclusion of 300ps jitter at the output pins is probably considered good, but not excellent (he doesn't consider it good). This is compared to the 970ps being reported for the M2Tech at the output. Edit: slim.a pointed out that this was an unfaircomparison as the M2tech jitter was a measured value at the output of the SPDIF whereas the Musiland was a theoretical jitter value at the FPGA pin output

This 300ps is also the max value that it could be with all gates in the FPGA firing, etc. Another view on this comes from some measurements taken http://go.head-fi.org/?id=475X763&ur...40486%23p40486 where the noise of the Musiland was plotted against the noise from an AP SYS2722 and showed it only slightly higher (2-5dB). Interestingly, the SYS2722 was(is?) the equipment used by Stereophile to do it's jitter measurements on equipment. Other measurements were done by FMAK on Audioasylum which indicated a jitter measure of about 100ps.

It would be good to measure the Musiland & M2Tech & whatever else with the same equipment to get a relative ranking of jitter from these units as using absolute jitter figures is fraught with danger.

Anyway, I'm changing the crystal in the Musiland for a low jitter clock (with good PS) & will see if it makes a difference to the sound

Reading Musiland BBS and translating with google it seems that 1.0.6.0 driver is in the beta phase (not general download) and reportedly it has again reduced CPU usage and ASIO "sonic boom" (nice translation) problems.

Have I been a bold boy? When I went to the Musiland forum I saw that my account status had changed to "Beggar" & I could no longer read any threads - I had to get Jeffrey to register me under another username. Has anybody else had this problem?

Is the ASIO "sonic boom" problem the static noise & clicks reported here?

Good to see they are turning around beta releases quickly - it augers well for future driver support (one of the issues Swenson drew attention to)

BTW, I just missed out on that unit on ebay - my $50 bid was a second too late - did one of you guys snag it at $48.70?

PS Faudrei, Looks like they copped the ASIO buffer problem or else they might have read your analysis

Okay, a noob question. What is the Musiland Monitor's output? Can it be used in conjunction with the iBasso D2+Boa or the D10 Cobra? Thanks.

jjsoviet, you can use it with D10.

I was looking for a relatively cheap alternative DAC I could buy that I could pair with the Heed Canamp while I save up a few more weeks until I can buy a V-dac. Is the Musiland Monitor 01 US a good choice for a budget DAC to use with my laptop and Canamp?

Another measurement of jitter in musiland 02 us:

Show about 270ps, this is a measurement of GEFRUSTI a videohifi forum member.

^^

Good or terrible?

For the price I think is an excellent result.
I believe that a jitter less than 250 ps is very difficult to detect even for those who have ears and trained experts.
With this value we are almost there.
But it seems however that the opinions about the musiland's jitter are far from homogeneous.
Jkeny let us know the impressions after crystal change.
Ciao

Sweet, well I already own it on the 02 US thread and so far it's pretty amazing for the price.